混凝土多孔砖砌体建筑裂缝收缩效应可靠度分析  

RELIABILITY ANALYSIS OF SHRINKAGE EFFECTS FOR CRACK CONTROL IN CONCRETE PERFORATED BRICK MASONRY STRUCTURE

作　　者：李妍[1,2] 方权 姜麒任 王淼 LI Yan;FANG Quan;JIANG Qiren;WANG Miao(College of Civil Engineering, Jilin Jianzhu University, Changchun 130118, China;Department of Civil ＆ Environmental Engineering, University of California, Los Angeles CA90095, America)

机构地区：[1]吉林建筑大学土木工程学院,长春130118 [2]美国加州大学洛杉矶分校土木与环境工程学院,加利福尼亚州洛杉矶CA90095

出　　处：《工业建筑》2018年第4期66-71,共6页Industrial Construction

基　　金：国家重点研发计划资助项目(2017YFC0806100);吉林省科技厅国际合作项目(20170414018GH)

摘　　要：为解决混凝土多孔砖砌体结构由于干燥收缩作用引起的裂缝问题,提出了一种基于干缩变形的抗裂性能的可靠度计算方法。利用弹性力学给出了收缩应力与变形关系,得到了位移和应力的变化规律。通过50片自然环境养护条件下混合砂浆砌筑标准墙体试验结果,明确了干燥收缩值及其影响因素的概率特性,从定量角度考虑了其抗裂效果,并通过统计分析建立了墙体抗裂可靠度计算式。In order to solve the dry shrinkage deformation of concrete perforated brick wall,a reliability method based on the crack resistance of dry shrinkage deformation was proposed. The relationship between shrinkage stress and deformation was put forward,the change law between displacement and stress was given by using elastic mechanics.Combined with the experiment results of 50 mixed mortar masonry wall under the condition of natural environment maintenance standard,the quantitative research has conducted to investigate the effects of cracking,the propability characteristic of dry shrinkage value and effects were analyzed. Finally,a reliability formula for calcuating crack resistance was proposed.

关 键 词：混凝土多孔砖 砌体结构 干燥收缩变形 抗裂性能 可靠度分析 

分 类 号：TU364[建筑科学—结构工程]